This 4 1/2" x 12 1/2" rectangle features easy-to-read black and white markings printed in 1" grids marked in 1/8" and 1/4" increments. Our exclusive embedded gripper dots hold the fabric while cutting when pressure is applied. The patented Turn-A-Round feature - which adds the 1/2" seam allowance - is incorporated into each ruler. Turn the ruler around to cut whole inches. Angles of 30°, 45°, 60° and 90° are printed in white. Horizontal and vertical lines are printed on the rectangle so the center of the ruler is easily distinguishable. Dashed lines are printed 1/4" away from two adjoining edges to aid in trimming seam allowances.